A human sperm cell contains either an X or Y chromosome while an egg only has a X chromosome .

人体精子细胞包含X或Y染色体，而卵子只包含 X 染色体。

This is based on evidence that male sperm ( Y chromosome ) are faster weaker and have a shorter lifespan than female sperm ( X chromosome ) which are slower but survive for longer .

该观点基于雄性精子（即Y染色体）与雌性精子（即 X 染色体）相比游动速度更快，但生命周期更短且活性更低。雌性精子虽然游动得较慢，但存活时间更长。

As with mice the TEX11 gene is also located on the human X chromosome .

同小鼠一样，人体内的TEX11基因也位于 X 染色体上。

It 's plausible that millions of years ago a single mutation resulted in two different versions of the photopigment gene becoming located on the same X chromosome .

鼠类研究的主要作者JeremyNathans说，可能在亿万年前一种特别的突变造成感光素基因中两种不同的感光色素基因编码定位于同一个 X 染色体上。

Genetic polymorphism of X chromosome short tandem repeats locus

X 染色体短串联重复序列基因座的遗传多态性

Germ cell specific autosomal versions of several genes located on the X chromosome are activated during this period thus circumventing the problem that would arise from their silencing .

在此期间，位于 X 染色体上的生殖细胞特有的染色体形式上的几个基因被激活，从而避免了因为它们的噪声抑制可能引起的问题。

In males ( who have only one X chromosome ) one altered copy of the gene in each cell is sufficient to cause the condition .

在男性（谁只能有一个 X 染色体），一个改变复制的基因在每个细胞就足以造成状况。

Most mammals hae just two kinds of photopigment in their retinas : one is encoded in the X chromosome and the other in an autosomal ( non-sex ) chromosome .

大部分哺乳动物的视网膜中只有两种感光色素：一种编码在 X 染色体中另一种寸在于正染色体中。

Female mosaicism of the X chromosome has major implications for human health and disease and is the leading cause of female protection from X-linked genetic disorders .

女性作为 X 染色体的杂合子在人类的健康与疾病中及重要作用，并可避免X连锁遗产性疾病在女性中发生。

Skewed X Chromosome Inactivation and Imprinted / X-linked Gene Expression in Human Embryonic Stem Cells

人类胚胎干细胞 X 染色体倾斜性失活及印迹、X连锁基因表达状态

But many primates including humans hae a third photopigment encoded by a second gene on the X chromosome .

但是多数灵长类包括人类有着三种感光色素，通过在 X 染色体中的第二种基因编码。

The study published in the March issue of Genes & Development also reports the first meiosis-specific factor ever found on the X chromosome .

刊登在3月份的“基因与发育”（Genes&Development）期刊上的一篇文章同样报道了首次发现的位于 X 染色体上的与减数 分裂相关的因子。

Breeders need to be aware of the sex linked diseases which is an abnormal gene contained in X chromosome .

繁殖者需要了解到的性状疾病，那就是 X 染色体中存在着不正常的基因。

For example in a genetic race or class distinction the use of the X chromosome markers can be used for the identification of a person 's ethnicity or class .

例如，在种族或阶层的遗传鉴定中，可以利用 X 染色体标志物确定个人所属的种族或阶层。

Because men have only one X chromosome that they inherit from their mother and thus only one copy of the TEX11 gene any mutation could theoretically lead to sterility .

因为男性只有一条从母亲那里遗传来的 X 染色体，因此他们的TEX11基因只有一个拷贝，理论上来说，TEX11基因的任何突变都可以导致不育。

For decades conventional wisdom stated that the X chromosome had little to do with meiosis or infertility because the X chromosome is silenced during male meiosis .

几十年来，传统的理论认为 X 染色体与减数分裂以及男性不育无关，因为在男性减数分裂过程中X染色体被沉默掉了。

A genetic variant on the X chromosome may explain why some HIV-infected women are slower to develop full-blown AIDS than men .

染色体上的遗传变异可能解释了为什么一些感染艾滋病病毒的妇女比男子发展成为全面爆发的艾滋病更缓慢。

WTX : the Wilms tumor suppressor gene located on the sex-determining X chromosome

WTX基因：第一个位于 X 染色体上的肾母细胞瘤抑癌基因

X chromosome mosaicism is not the only genetic difference between males and females .

染色体嵌合现象并不是男性与女性之间唯一的基因差别。

The colour blindness in the monkeys arises because full colour vision requires two versions of the opsin gene which is carried on the X chromosome .

色盲在猴群中上升是因为全色觉需要两种不同的视蛋白基因，它们存在于 X 染色体上。

Women with the syndrome are missing one or part of their second X chromosome .

患有特纳综合症的女性往往缺失一种或部分第二 X 染色体。

Sometimes there may be abnormalities in the X chromosome in only some cells in the body .

有时可能会有异常的 X 染色体中，只有一些细胞在人体内。

The chromosome carrying the male determining genes is designated Y and the corresponding female one the X chromosome .

携带决定男性的基因的染色体称为Y染色体，携带决定女性的基因的染色体称为 X 染色体。

Development and Application of 4 X Chromosome STR Loci Markers Typing System for Forensic Genetics

四个 X-STR基因座荧光复合扩增体系的建立及其法医遗传学研究

The ailment treated in the Lancet study choroideremia is caused by defects in a single gene on the X chromosome and mainly affects boys .

《柳叶刀》上发表的研究治疗的脉络膜缺失症是由 X 染色体的单一基因缺陷引起的，主要患者为男孩。

Concerning characteristics that are determined by genes carried on the sex chromosomes ( on the X chromosome in particular ) .

关于携带性染色体（尤指 x 染色体）基因决定的特征。

If so there could be a familial genetic disorder called fragile X in which a certain portion of the X chromosome is abnormal .

如果有，那么你很可能有脆弱X基因的家族遗传病。也就是 X 基因的一部分是异常的。

Is Photosensitive Epilepsy Less Common in Males Due to Variation in X Chromosome Photopigment Genes ?

光敏感性癫痫在男性较少见是否由于 X 染色头感光色素基因变异？

The TLR8 gene is on the X chromosome of which men only have one copy .

TLR8基因位于 X 染色体上，男性只有一条 X染色体。